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    <script>
        //柯里化思想

        //请实现以下效果
        // function add (a, b, c) {
        //     return a + b + c
        // }
        // console.log(add.length);

        // const res = add(1, 2, 3) //6

        //要求声明一个curry函数，函数add经过curry函数的处理后，每次调用只能接收一个参数
        // const curry = () => { }


        // let addCurry = curry(add)

        // console.log(addCurry);
        // const res2 = addCurry(1)(2)(3) //6

        // console.log(res);

        function curry(fn){
            function curried(...args){
                if(args.length>=fn.length){
                    return fn.apply(this, args);
                }else{
                    return function(...args2){
                        return curried.apply(this, args.concat(args2) );
                    }
                }
            }
            return curried
        }
        function sum(a,b,c){
            return a + b + c
        }
        let curriedSum=curry(sum);
        console.log(curriedSum(1,2,3));
        console.log(curriedSum(1)(2,3));
        console.log(curriedSum(1)(2)(3));
        // 不会了
        
    </script>
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